Author/Authors :
ÖNDER, Hasan Ondokuz Mayıs University - Faculty of Agriculture - Department of Animal Science, Turkey , OLFAZ, Mustafa Ondokuz Mayıs University - Faculty of Agriculture - Department of Animal Science, Turkey , SOYDAN, Ercan Ondokuz Mayıs University - Faculty of Agriculture - Department of Animal Science, Turkey
Title Of Article :
Comparison of working correlation matrices in generalized estimating equations for animal data
Abstract :
Experimental animal science is often interested in estimating the effects of some set of explanatory variables on a categorical response variable on interest. This study demonstrates the use of generalized estimating equations (GEE) with use of categorical data taken from an animal research. It is known that different correlation structures can yield different results when the data has repeated measurements. The aim of this study was to determine which correlation structure has more appropriate the animal science. Five different correlation structures were compared on data with repeated measurements for GEE. As result of this study, Independent and exchangeable correlation structures can be recommended to analyze the categorical data sets for biological sciences because of the lowest QIC values.
NaturalLanguageKeyword :
Generalized Estimating Equations , Categorical data , Correlation structure , Animal science
JournalTitle :
Anadolu Journal Of Agricultural Sciences
